Parker is a production assistant on the set of a film Roger gets a part in in The Vacation Goo. When the director complains that Roger can't cry properly, he insults the writer that turns out to also be the director while stealing donuts from Parker. When Roger is fired, he punches Parker in the crotch complaining that lunch was late.

According to the DVD commentary, Parker is modeled and named after production assistant Parker Deay on American Dad.